Browser-role outbound websocket threading issue

[vladimirralev]

javax.net.ssl.SSLException: Received fatal alert: handshake_failure
at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1666)
at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1634)
at sun.security.ssl.SSLEngineImpl.recvAlert(SSLEngineImpl.java:1800)
at sun.security.ssl.SSLEngineImpl.readRecord(SSLEngineImpl.java:1083)
at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:907)
at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:781)
at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624)
at gov.nist.javax.sip.stack.SSLStateMachine.unwrap(SSLStateMachine.java:303)
at gov.nist.javax.sip.stack.SSLStateMachine.unwrap(SSLStateMachine.java:244)
at gov.nist.javax.sip.stack.NioTlsWebSocketMessageChannel.addBytes(NioTlsWebSocketMessageChannel.java:282)
at gov.nist.javax.sip.stack.NioTcpMessageChannel.readChannel(NioTcpMessageChannel.java:121)
at gov.nist.javax.sip.stack.NioTcpMessageProcessor$ProcessorTask.read(NioTcpMessageProcessor.java:154)
at gov.nist.javax.sip.stack.NioTcpMessageProcessor$ProcessorTask.run(NioTcpMessageProcessor.java:344)
at java.lang.Thread.run(Thread.java:745)

Registering to a server concurrently can start handshaking multiple times. We must make sure handshake is complete before allowing concurrency.